What tool is generally used to set a divider to an exact diameter?

What tool is generally used to set a divider to an exact diameter?

• A. Machinist scale
• B. Surface gauge
• C. Dial indicator
• D. Caliper

Answer: (A)

Setting a divider to an exact diameter rests on having a precise, repeatable length reference. A machinist scale provides fine graduations and a straight, rigid reference that you can read to the exact distance you need. By placing one leg of the divider against the scale and adjusting the other leg to match that measured span, you can lock in a precise width and then reproduce that diameter whenever needed. The scale serves as the reliable standard you transfer from to the divider, making it easy to dial in a specific size with accuracy. A surface gauge is mainly for scribing or transferring lines from a reference surface, not for establishing a precise, fixed span between the divider’s tips. A dial indicator measures small deviations rather than setting a fixed diameter. While calipers can measure and transfer distances, the question points to the machinist scale as the typical tool used to set the divider to an exact diameter.

Setting a divider to an exact diameter rests on having a precise, repeatable length reference. A machinist scale provides fine graduations and a straight, rigid reference that you can read to the exact distance you need. By placing one leg of the divider against the scale and adjusting the other leg to match that measured span, you can lock in a precise width and then reproduce that diameter whenever needed. The scale serves as the reliable standard you transfer from to the divider, making it easy to dial in a specific size with accuracy.

A surface gauge is mainly for scribing or transferring lines from a reference surface, not for establishing a precise, fixed span between the divider’s tips. A dial indicator measures small deviations rather than setting a fixed diameter. While calipers can measure and transfer distances, the question points to the machinist scale as the typical tool used to set the divider to an exact diameter.